On a weather map, which of the following signifies the transition zone between two air masses with sharply contrasting properties?
A. the letter "L"
B. the words "air mass weather"
C. the letter "H"
D. a front
Answer: D
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Carbon dioxide reacts with water to form
A) carbon dioxide and water. B) carbonic acid. C) sodium bicarbonate. D) hydrated carbon.
Which of the following is true about relational database query?
A. One can work with two or more tables and Relational database queries rely on keys that connect tables. B. One may query tables that are connected by either join or relate. C. Relational database queries rely on keys that connect tables. D. All of these are correct E. One can work with two or more tables.
What pattern is most likely associated with clear skies and fair weather?
A) high pressure regions B) low pressure regions C) a cold front D) a warm front
Which of the following constitutes a difference between a glycolipid and a sphingolipid?
A) only one contains sphingosine B) only one contains a fatty acid C) only one contains phosphate D) only one contains a carbohydrate E) both c and d F) All of the choices a through d are differences.